Inking device for printing presses



A. SCHLESINGER ET AL INKING DEVICE FOR PRINTING PRESSES Filed May 14, 1927 11w enior:

qg m Patented Jan. 8, 1 929.

' UNITED ,STATES PATENT oF lcE.

ALFRED SCHLESINGER' AND HEINRICH LEHNHOFF, OF BERLIN, GERMAN Y, ASSIGNORS '10 BERLINER IIASCHINENBAU-AC'1IENGESELLSGHAFT VORMALS L. SCHWARTZ- KOPEE, OF BERLIN, GERMANY, A CORPGRATION OF GERMANY.

INKING DEVICE FOR PRINTING PRESSES.

Application filed May 14, 1927, Serial No. 191,437, and in Germany May 17, 1926.

There are known inking devices in which a. cylinder for triturating the ink preliminarily is arranged between the ink-box roller and the inking cylinder of the applying roller set. Although a considerably better trituration of the ink is obtained by that arrangement, still, the ink supply to the inking cylinder proceeds discontinuously because the member located between the cylinder for triturating the ink preliminarily and the inking cylinder contacts only alternately wlth one and the other cylinder.

The drawback stated is overcome in the present invention by the feature that the ink is taken off the cylinder for triturating'it preliminarily not merely by one conveying during that time ink triturated preliminarily.

By the alternating actuation of a plurality of ink conveying members a perfect compensation is attained. The ink supply takes place uninterruptedly; this effect can be attained solely by subdividing the path in the manner stated.

The invention is illustrated diagrammatically and by way of example onthe accompanying drawing, on which Figure 1 is aside-view of an inkingroller set designed according to this invention, and

Figure 21is a similar representation, some of the ink-conveying members being in another position. 7

On the drawing, ;1 denotes the 'ink-box roller and 2 a cylindrical ink conveying member, or conveying roller respectively, which.

. conveys the ink from the roller 1 to the cylinder 3 on which the ink thoroughly trit'urated preliminarily bymeans of the cylindersi. .The .conveyingroller 5 and 6 convey-alternately the triturated ink from the cylinder 3 to the inking' cylinder 7 The ink conveying rollers 5 and 6 are actuated by cams 8 and 9, as well as by rolls 10 and 11 in the one direction and by springs 19 or the like in the other direction, however, any suitable means may be used to this purpose. The members 5 and 10,.as well as 6 and 11, are carried by bell-crank levers 15, 15 located on pivots 1.6, 16 affixed to the frame20 of the printing press.

It is obvious that in consequence of the cams 8 and 9 having dlfi'erent angular positions upon their shafts 18 and 19 respectively the lnk is supplied practicallycontinuously to the mking cylinder 7. In those periods of t me in which the rollers 5' and 6 do not convey ink they serve as triturating rollers while co-operating with the inking cylinder 7.

The cams 8 and 9 may be actuated for instance by cog-Wheels 12 and 13 which are su tably connected with said cams and mesh with an intermediate driving cog-wheel 14 that is common to them and secured to the shaft of the cylinder 7.

The axes of the cylinders, rollers and cogwheels are journalled in the frame of the machine in the usual manner.

We claim:

1. An inking device for printing. presses ink preliminarily, comprising, in com ination with said cylinder and with the inking-- n a I I provided w1th a cyhnder for trituratin the 2. An inking device for printing presses provided with a cylinder for trituratln the ink .preliminarily, comprising, in com ination with said cylinder and with the inking cylinder proper, a plurality of ink-conveying members arranged between said two cylinders and cams for moving, said conveying members alternately into contact with the said inking cylinder propera'nd having different angular positions on their respective shafts so that theyhold at each time at least one of said members in contact with said inking cylinder.

3. An inking device for printing presses provided witha cylinder for triturating the ink preliminarily, comprising, in combina tion with said cylinder and with the inking.

of the said two cylinders and means adapted to control said levers so as to hold at each time 10 atleast one of said members in contact with said inking cylinder.

In testimony whereof we have afiixed our signatures. I

ALFRED SCHLESINGER. HEINRICH LEHNHOFE. 

